Knee him in the nards

You slam your knee right into his marbles. He lets out a dry groan, but remains his grip on your shoulders, though it has weakened.

You slam your knee up a second time, really feeling his big balls strain against your knee as they stretch in his jeans. In response, he lets out a shaky moan, his legs wobbling for a second.

You knee his nuts yet again, harder than the last two. You can see beads of sweat forming on his green skin as he lessens his grip even more and his knees buckle, trying to shield his jewels from any further knees.

You manage knee the zombie boy in his balls a total of 8 more times before the pain is too much and he drops to his knees.

Sweat trickles down his forehead as he clutches his balls in agony.